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| DOI | 10.7498/aps.73.20231224 |
| Method of measuring atmospheric CO2 based onFabry-Perot interferometer | |
| 发表日期 | 2024 |
| ISSN | 1000-3290 |
| 起始页码 | 73 |
| 结束页码 | 2 |
| 卷号 | 73期号:2 |
| 英文摘要 | CO2 is one of the main greenhouse gases. Its emission and accumulation lead to the strengthening of thegreenhouse effect, which in turn causes global climate change. Therefore, it is of great significance to obtain thechange of CO2 concentration in the atmospheric environment for the study of climate change. In order to meetthe requirements of low cost, fast, on-line and accurate measurement of CO2 in atmospheric environment, a CO2gas concentration measurement system based on Fabry-Perot interferometer is built in this work. The thermalradiation source based on micro-electro-mechanical system (MEMS) technology is used as a light source of theFabry-Perot interferometer system, and the transmission optical path is designed to replace the commonrefractive optical path. By electrostatically controlling the distance between the two lenses and changing theinterference spectrum, the interference peak adjustment of the center wavelength of the 10 nm step is realized,and the absorption spectrum is obtained by scanning. Based on the principle of differential optical absorptionspectroscopy, the concentration of CO2 gas is obtained, and the real-time on-line monitoring of CO2concentration is realized. Using the sample gas calibration system and the commercial photoacousticspectroscopy multi-gas analyzer to verify the system, the results show that the detection limit of the system is1.09x10-6, the detection accuracy is +/- 1.13x10-6, and the measurement error is less than 1%. Real-time onlinemonitoring of atmospheric CO2 has been conducted in Huaibei, a coal city. A comparative observationalexperiment is performed between this system and a commercial photoacoustic spectroscopy multi-gas analyzer.The two systems show consistent trends in measuring CO2 variations, with a correlation coefficient of R=0.92.It shows that the Fabry-Perot interferometer system can meet the requirement of rapid, convenient and highprecision measurement of CO2 concentration in the environment |
| 英文关键词 | carbon dioxide; Fabry-Perot interferometer; thermal radiation source; photoacoustic spectrummulti-gas analyzer |
| 语种 | 英语 |
| WOS研究方向 | Physics |
| WOS类目 | Physics, Multidisciplinary |
| WOS记录号 | WOS:001178133500016 |
| 来源期刊 | ACTA PHYSICA SINICA
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/290202 |
| 作者单位 | Huaibei Normal University |
| 推荐引用方式 GB/T 7714 | . Method of measuring atmospheric CO2 based onFabry-Perot interferometer[J],2024,73(2). |
| APA | (2024).Method of measuring atmospheric CO2 based onFabry-Perot interferometer.ACTA PHYSICA SINICA,73(2). |
| MLA | "Method of measuring atmospheric CO2 based onFabry-Perot interferometer".ACTA PHYSICA SINICA 73.2(2024). |
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